An Astronaut on a Spaceship Moving at 0 $4.26 \mathrm { y }$

Multiple Choice

An astronaut on a spaceship moving at 0.927c says that the trip between two stationary stars took $4.26 \mathrm { y }$ How long does this journey appear to take to someone in the rest frame of the two stars?

A) 11.4 y
B) 1.60 y
C) 2.30 y
D) 12.6 y